diff options
Diffstat (limited to 'tools/crypto/ccp/dbc.c')
| -rw-r--r-- | tools/crypto/ccp/dbc.c | 17 |
1 files changed, 9 insertions, 8 deletions
diff --git a/tools/crypto/ccp/dbc.c b/tools/crypto/ccp/dbc.c index 37e813175642..a807df0f0597 100644 --- a/tools/crypto/ccp/dbc.c +++ b/tools/crypto/ccp/dbc.c @@ -8,6 +8,7 @@ */ #include <assert.h> +#include <errno.h> #include <string.h> #include <sys/ioctl.h> @@ -22,16 +23,14 @@ int get_nonce(int fd, void *nonce_out, void *signature) struct dbc_user_nonce tmp = { .auth_needed = !!signature, }; - int ret; assert(nonce_out); if (signature) memcpy(tmp.signature, signature, sizeof(tmp.signature)); - ret = ioctl(fd, DBCIOCNONCE, &tmp); - if (ret) - return ret; + if (ioctl(fd, DBCIOCNONCE, &tmp)) + return errno; memcpy(nonce_out, tmp.nonce, sizeof(tmp.nonce)); return 0; @@ -47,7 +46,9 @@ int set_uid(int fd, __u8 *uid, __u8 *signature) memcpy(tmp.uid, uid, sizeof(tmp.uid)); memcpy(tmp.signature, signature, sizeof(tmp.signature)); - return ioctl(fd, DBCIOCUID, &tmp); + if (ioctl(fd, DBCIOCUID, &tmp)) + return errno; + return 0; } int process_param(int fd, int msg_index, __u8 *signature, int *data) @@ -63,10 +64,10 @@ int process_param(int fd, int msg_index, __u8 *signature, int *data) memcpy(tmp.signature, signature, sizeof(tmp.signature)); - ret = ioctl(fd, DBCIOCPARAM, &tmp); - if (ret) - return ret; + if (ioctl(fd, DBCIOCPARAM, &tmp)) + return errno; *data = tmp.param; + memcpy(signature, tmp.signature, sizeof(tmp.signature)); return 0; } |